ash/wm/drag_window_resizer_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/wm/drag_window_resizer.h"
   6
   7 #include "ash/display/mouse_cursor_event_filter.h"
   8 #include "ash/root_window_controller.h"
   9 #include "ash/shelf/shelf_layout_manager.h"
  10 #include "ash/shell.h"
  11 #include "ash/shell_window_ids.h"
  12 #include "ash/test/ash_test_base.h"
  13 #include "ash/test/cursor_manager_test_api.h"
  14 #include "ash/test/display_manager_test_api.h"
  15 #include "ash/wm/drag_window_controller.h"
  16 #include "ash/wm/window_util.h"
  17 #include "base/strings/string_number_conversions.h"
  18 #include "base/strings/stringprintf.h"
  19 #include "ui/aura/client/aura_constants.h"
  20 #include "ui/aura/env.h"
  21 #include "ui/aura/test/test_window_delegate.h"
  22 #include "ui/base/hit_test.h"
  23 #include "ui/base/ui_base_types.h"
  24 #include "ui/compositor/layer_tree_owner.h"
  25 #include "ui/gfx/geometry/insets.h"
  26 #include "ui/views/widget/widget.h"
  27 #include "ui/wm/core/window_util.h"
  28
  29 namespace ash {
  30 namespace {
  31
  32 const int kRootHeight = 600;
  33
  34 }  // namespace
  35
  36 class DragWindowResizerTest : public test::AshTestBase {
  37  public:
  38   DragWindowResizerTest() {}
  39   ~DragWindowResizerTest() override {}
  40
  41   void SetUp() override {
  42     AshTestBase::SetUp();
  43     UpdateDisplay(base::StringPrintf("800x%d", kRootHeight));
  44
  45     aura::Window* root = Shell::GetPrimaryRootWindow();
  46     gfx::Rect root_bounds(root->bounds());
  47     EXPECT_EQ(kRootHeight, root_bounds.height());
  48     EXPECT_EQ(800, root_bounds.width());
  49     Shell::GetInstance()->SetDisplayWorkAreaInsets(root, gfx::Insets());
  50     window_.reset(new aura::Window(&delegate_));
  51     window_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
  52     window_->Init(ui::LAYER_NOT_DRAWN);
  53     ParentWindowInPrimaryRootWindow(window_.get());
  54     window_->set_id(1);
  55
  56     always_on_top_window_.reset(new aura::Window(&delegate2_));
  57     always_on_top_window_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
  58     always_on_top_window_->SetProperty(aura::client::kAlwaysOnTopKey, true);
  59     always_on_top_window_->Init(ui::LAYER_NOT_DRAWN);
  60     ParentWindowInPrimaryRootWindow(always_on_top_window_.get());
  61     always_on_top_window_->set_id(2);
  62
  63     system_modal_window_.reset(new aura::Window(&delegate3_));
  64     system_modal_window_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
  65     system_modal_window_->SetProperty(aura::client::kModalKey,
  66                                       ui::MODAL_TYPE_SYSTEM);
  67     system_modal_window_->Init(ui::LAYER_NOT_DRAWN);
  68     ParentWindowInPrimaryRootWindow(system_modal_window_.get());
  69     system_modal_window_->set_id(3);
  70
  71     transient_child_ = new aura::Window(&delegate4_);
  72     transient_child_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
  73     transient_child_->Init(ui::LAYER_NOT_DRAWN);
  74     ParentWindowInPrimaryRootWindow(transient_child_);
  75     transient_child_->set_id(4);
  76
  77     transient_parent_.reset(new aura::Window(&delegate5_));
  78     transient_parent_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
  79     transient_parent_->Init(ui::LAYER_NOT_DRAWN);
  80     ParentWindowInPrimaryRootWindow(transient_parent_.get());
  81     ::wm::AddTransientChild(transient_parent_.get(), transient_child_);
  82     transient_parent_->set_id(5);
  83
  84     panel_window_.reset(new aura::Window(&delegate6_));
  85     panel_window_->SetType(ui::wm::WINDOW_TYPE_PANEL);
  86     panel_window_->Init(ui::LAYER_NOT_DRAWN);
  87     ParentWindowInPrimaryRootWindow(panel_window_.get());
  88   }
  89
  90   void TearDown() override {
  91     window_.reset();
  92     always_on_top_window_.reset();
  93     system_modal_window_.reset();
  94     transient_parent_.reset();
  95     panel_window_.reset();
  96     AshTestBase::TearDown();
  97   }
  98
  99  protected:
 100   gfx::Point CalculateDragPoint(const WindowResizer& resizer,
 101                                 int delta_x,
 102                                 int delta_y) const {
 103     gfx::Point location = resizer.GetInitialLocation();
 104     location.set_x(location.x() + delta_x);
 105     location.set_y(location.y() + delta_y);
 106     return location;
 107   }
 108
 109   ShelfLayoutManager* shelf_layout_manager() {
 110     return Shell::GetPrimaryRootWindowController()->GetShelfLayoutManager();
 111   }
 112
 113   static WindowResizer* CreateDragWindowResizer(
 114       aura::Window* window,
 115       const gfx::Point& point_in_parent,
 116       int window_component) {
 117     return CreateWindowResizer(
 118         window,
 119         point_in_parent,
 120         window_component,
 121         aura::client::WINDOW_MOVE_SOURCE_MOUSE).release();
 122   }
 123
 124   bool TestIfMouseWarpsAt(const gfx::Point& point_in_screen) {
 125     return test::DisplayManagerTestApi::TestIfMouseWarpsAt(GetEventGenerator(),
 126                                                            point_in_screen);
 127   }
 128
 129   aura::test::TestWindowDelegate delegate_;
 130   aura::test::TestWindowDelegate delegate2_;
 131   aura::test::TestWindowDelegate delegate3_;
 132   aura::test::TestWindowDelegate delegate4_;
 133   aura::test::TestWindowDelegate delegate5_;
 134   aura::test::TestWindowDelegate delegate6_;
 135
 136   scoped_ptr<aura::Window> window_;
 137   scoped_ptr<aura::Window> always_on_top_window_;
 138   scoped_ptr<aura::Window> system_modal_window_;
 139   scoped_ptr<aura::Window> panel_window_;
 140   aura::Window* transient_child_;
 141   scoped_ptr<aura::Window> transient_parent_;
 142
 143  private:
 144   DISALLOW_COPY_AND_ASSIGN(DragWindowResizerTest);
 145 };
 146
 147 // Verifies a window can be moved from the primary display to another.
 148 TEST_F(DragWindowResizerTest, WindowDragWithMultiDisplays) {
 149   if (!SupportsMultipleDisplays())
 150     return;
 151
 152   // The secondary display is logically on the right, but on the system (e.g. X)
 153   // layer, it's below the primary one. See UpdateDisplay() in ash_test_base.cc.
 154   UpdateDisplay("800x600,400x300");
 155   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 156   ASSERT_EQ(2U, root_windows.size());
 157
 158   window_->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 159                              Shell::GetScreen()->GetPrimaryDisplay());
 160   EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 161   {
 162     // Grab (0, 0) of the window.
 163     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 164         window_.get(), gfx::Point(), HTCAPTION));
 165     ASSERT_TRUE(resizer.get());
 166     // Drag the pointer to the right. Once it reaches the right edge of the
 167     // primary display, it warps to the secondary.
 168     resizer->Drag(CalculateDragPoint(*resizer, 800, 10), 0);
 169     resizer->CompleteDrag();
 170     // The whole window is on the secondary display now. The parent should be
 171     // changed.
 172     EXPECT_EQ(root_windows[1], window_->GetRootWindow());
 173     EXPECT_EQ("0,10 50x60", window_->bounds().ToString());
 174   }
 175
 176   window_->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 177                              Shell::GetScreen()->GetPrimaryDisplay());
 178   EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 179   {
 180     // Grab (0, 0) of the window and move the pointer to (790, 10).
 181     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 182         window_.get(), gfx::Point(), HTCAPTION));
 183     ASSERT_TRUE(resizer.get());
 184     resizer->Drag(CalculateDragPoint(*resizer, 795, 10), 0);
 185     // Window should be adjusted for minimum visibility (10px) during the drag.
 186     EXPECT_EQ("790,10 50x60", window_->bounds().ToString());
 187     resizer->CompleteDrag();
 188     // Since the pointer is still on the primary root window, the parent should
 189     // not be changed.
 190     // Window origin should be adjusted for minimum visibility (10px).
 191     EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 192     EXPECT_EQ("790,10 50x60", window_->bounds().ToString());
 193   }
 194
 195   window_->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 196                              Shell::GetScreen()->GetPrimaryDisplay());
 197   EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 198   {
 199     // Grab the top-right edge of the window and move the pointer to (0, 10)
 200     // in the secondary root window's coordinates.
 201     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 202         window_.get(), gfx::Point(49, 0), HTCAPTION));
 203     ASSERT_TRUE(resizer.get());
 204     resizer->Drag(CalculateDragPoint(*resizer, 751, 10), ui::EF_CONTROL_DOWN);
 205     resizer->CompleteDrag();
 206     // Since the pointer is on the secondary, the parent should be changed
 207     // even though only small fraction of the window is within the secondary
 208     // root window's bounds.
 209     EXPECT_EQ(root_windows[1], window_->GetRootWindow());
 210     // Window origin should be adjusted for minimum visibility (10px).
 211     int expected_x = -50 + 10;
 212     EXPECT_EQ(base::IntToString(expected_x) + ",10 50x60",
 213               window_->bounds().ToString());
 214   }
 215   // Dropping a window that is larger than the destination work area
 216   // will shrink to fit to the work area.
 217   window_->SetBoundsInScreen(gfx::Rect(0, 0, 700, 500),
 218                              Shell::GetScreen()->GetPrimaryDisplay());
 219   EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 220   {
 221     // Grab the top-right edge of the window and move the pointer to (0, 10)
 222     // in the secondary root window's coordinates.
 223     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 224         window_.get(), gfx::Point(699, 0), HTCAPTION));
 225     ASSERT_TRUE(resizer.get());
 226     resizer->Drag(CalculateDragPoint(*resizer, 101, 10), ui::EF_CONTROL_DOWN);
 227     resizer->CompleteDrag();
 228     EXPECT_EQ(root_windows[1], window_->GetRootWindow());
 229     // Window size should be adjusted to fit to the work area
 230     EXPECT_EQ("400x253", window_->bounds().size().ToString());
 231     gfx::Rect window_bounds_in_screen = window_->GetBoundsInScreen();
 232     gfx::Rect intersect(window_->GetRootWindow()->GetBoundsInScreen());
 233     intersect.Intersect(window_bounds_in_screen);
 234
 235     EXPECT_LE(10, intersect.width());
 236     EXPECT_LE(10, intersect.height());
 237     EXPECT_TRUE(window_bounds_in_screen.Contains(gfx::Point(800, 10)));
 238   }
 239
 240   // Dropping a window that is larger than the destination work area
 241   // will shrink to fit to the work area.
 242   window_->SetBoundsInScreen(gfx::Rect(0, 0, 700, 500),
 243                              Shell::GetScreen()->GetPrimaryDisplay());
 244   EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 245   {
 246     // Grab the top-left edge of the window and move the pointer to (150, 10)
 247     // in the secondary root window's coordinates. Make sure the window is
 248     // shrink in such a way that it keeps the cursor within.
 249     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 250         window_.get(), gfx::Point(0, 0), HTCAPTION));
 251     ASSERT_TRUE(resizer.get());
 252     resizer->Drag(CalculateDragPoint(*resizer, 799, 10), ui::EF_CONTROL_DOWN);
 253     resizer->Drag(CalculateDragPoint(*resizer, 850, 10), ui::EF_CONTROL_DOWN);
 254     resizer->CompleteDrag();
 255     EXPECT_EQ(root_windows[1], window_->GetRootWindow());
 256     // Window size should be adjusted to fit to the work area
 257     EXPECT_EQ("400x253", window_->bounds().size().ToString());
 258     gfx::Rect window_bounds_in_screen = window_->GetBoundsInScreen();
 259     gfx::Rect intersect(window_->GetRootWindow()->GetBoundsInScreen());
 260     intersect.Intersect(window_bounds_in_screen);
 261     EXPECT_LE(10, intersect.width());
 262     EXPECT_LE(10, intersect.height());
 263     EXPECT_TRUE(window_bounds_in_screen.Contains(gfx::Point(850, 10)));
 264   }
 265 }
 266
 267 // Verifies that dragging the active window to another display makes the new
 268 // root window the active root window.
 269 TEST_F(DragWindowResizerTest, WindowDragWithMultiDisplaysActiveRoot) {
 270   if (!SupportsMultipleDisplays())
 271     return;
 272
 273   // The secondary display is logically on the right, but on the system (e.g. X)
 274   // layer, it's below the primary one. See UpdateDisplay() in ash_test_base.cc.
 275   UpdateDisplay("800x600,800x600");
 276   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 277   ASSERT_EQ(2U, root_windows.size());
 278
 279   aura::test::TestWindowDelegate delegate;
 280   scoped_ptr<aura::Window> window(new aura::Window(&delegate));
 281   window->SetType(ui::wm::WINDOW_TYPE_NORMAL);
 282   window->Init(ui::LAYER_TEXTURED);
 283   ParentWindowInPrimaryRootWindow(window.get());
 284   window->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 285                             Shell::GetScreen()->GetPrimaryDisplay());
 286   window->Show();
 287   EXPECT_TRUE(ash::wm::CanActivateWindow(window.get()));
 288   ash::wm::ActivateWindow(window.get());
 289   EXPECT_EQ(root_windows[0], window->GetRootWindow());
 290   EXPECT_EQ(root_windows[0], ash::Shell::GetTargetRootWindow());
 291   {
 292     // Grab (0, 0) of the window.
 293     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 294         window.get(), gfx::Point(), HTCAPTION));
 295     ASSERT_TRUE(resizer.get());
 296     // Drag the pointer to the right. Once it reaches the right edge of the
 297     // primary display, it warps to the secondary.
 298     resizer->Drag(CalculateDragPoint(*resizer, 800, 10), 0);
 299     resizer->CompleteDrag();
 300     // The whole window is on the secondary display now. The parent should be
 301     // changed.
 302     EXPECT_EQ(root_windows[1], window->GetRootWindow());
 303     EXPECT_EQ(root_windows[1], ash::Shell::GetTargetRootWindow());
 304   }
 305 }
 306
 307 // Verifies a window can be moved from the secondary display to primary.
 308 TEST_F(DragWindowResizerTest, WindowDragWithMultiDisplaysRightToLeft) {
 309   if (!SupportsMultipleDisplays())
 310     return;
 311
 312   UpdateDisplay("800x600,800x600");
 313   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 314   ASSERT_EQ(2U, root_windows.size());
 315
 316   window_->SetBoundsInScreen(
 317       gfx::Rect(800, 00, 50, 60),
 318       Shell::GetScreen()->GetDisplayNearestWindow(root_windows[1]));
 319   EXPECT_EQ(root_windows[1], window_->GetRootWindow());
 320   {
 321     // Grab (0, 0) of the window.
 322     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 323         window_.get(), gfx::Point(), HTCAPTION));
 324     ASSERT_TRUE(resizer.get());
 325     // Move the mouse near the right edge, (798, 0), of the primary display.
 326     resizer->Drag(CalculateDragPoint(*resizer, -2, 0), ui::EF_CONTROL_DOWN);
 327     resizer->CompleteDrag();
 328     EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 329     // Window origin should be adjusted for minimum visibility (10px).
 330     int expected_x = 800 - 10;
 331     EXPECT_EQ(base::IntToString(expected_x) + ",0 50x60",
 332               window_->bounds().ToString());
 333   }
 334 }
 335
 336 // Verifies the drag window is shown correctly.
 337 TEST_F(DragWindowResizerTest, DragWindowController) {
 338   if (!SupportsMultipleDisplays())
 339     return;
 340
 341   UpdateDisplay("800x600,800x600");
 342   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 343   ASSERT_EQ(2U, root_windows.size());
 344
 345   window_->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 346                              Shell::GetScreen()->GetPrimaryDisplay());
 347   EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 348   EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
 349   {
 350     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 351         window_.get(), gfx::Point(), HTCAPTION));
 352     ASSERT_TRUE(resizer.get());
 353     DragWindowResizer* drag_resizer = DragWindowResizer::instance_;
 354     ASSERT_TRUE(drag_resizer);
 355     EXPECT_EQ(0u, drag_resizer->drag_window_controllers_.size());
 356
 357     // The pointer is inside the primary root. The drag window controller
 358     // should be NULL.
 359     resizer->Drag(CalculateDragPoint(*resizer, 10, 10), 0);
 360     EXPECT_EQ(0u, drag_resizer->drag_window_controllers_.size());
 361
 362     // The window spans both root windows.
 363     resizer->Drag(CalculateDragPoint(*resizer, 798, 10), 0);
 364     EXPECT_EQ(1u, drag_resizer->drag_window_controllers_.size());
 365     DragWindowController* controller =
 366         drag_resizer->drag_window_controllers_[0];
 367     ASSERT_TRUE(controller);
 368
 369     ASSERT_TRUE(controller->drag_widget_);
 370     ui::Layer* drag_layer =
 371         controller->drag_widget_->GetNativeWindow()->layer();
 372     ASSERT_TRUE(drag_layer);
 373     // Check if |resizer->layer_| is properly set to the drag widget.
 374     const std::vector<ui::Layer*>& layers = drag_layer->children();
 375     EXPECT_FALSE(layers.empty());
 376     EXPECT_EQ(controller->layer_owner_->root(), layers.back());
 377
 378     // |window_| should be opaque since the pointer is still on the primary
 379     // root window. The drag window should be semi-transparent.
 380     EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
 381     ASSERT_TRUE(controller->drag_widget_);
 382     EXPECT_GT(1.0f, drag_layer->opacity());
 383
 384     // Enter the pointer to the secondary display.
 385     resizer->Drag(CalculateDragPoint(*resizer, 800, 10), 0);
 386     EXPECT_EQ(1u, drag_resizer->drag_window_controllers_.size());
 387     controller = drag_resizer->drag_window_controllers_[0];
 388     ASSERT_TRUE(controller);
 389     // |window_| should be transparent, and the drag window should be opaque.
 390     EXPECT_GT(1.0f, window_->layer()->opacity());
 391     EXPECT_FLOAT_EQ(1.0f, drag_layer->opacity());
 392
 393     resizer->CompleteDrag();
 394     EXPECT_EQ(root_windows[1], window_->GetRootWindow());
 395     EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
 396   }
 397
 398   // Do the same test with RevertDrag().
 399   window_->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 400                              Shell::GetScreen()->GetPrimaryDisplay());
 401   EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 402   EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
 403   {
 404     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 405         window_.get(), gfx::Point(), HTCAPTION));
 406     ASSERT_TRUE(resizer.get());
 407     DragWindowResizer* drag_resizer = DragWindowResizer::instance_;
 408     ASSERT_TRUE(drag_resizer);
 409     EXPECT_EQ(0u, drag_resizer->drag_window_controllers_.size());
 410
 411     resizer->Drag(CalculateDragPoint(*resizer, 0, 610), 0);
 412     resizer->RevertDrag();
 413     EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 414     EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
 415   }
 416 }
 417
 418 // Verifies if the resizer sets and resets
 419 // MouseCursorEventFilter::mouse_warp_mode_ as expected.
 420 TEST_F(DragWindowResizerTest, WarpMousePointer) {
 421   MouseCursorEventFilter* event_filter =
 422       Shell::GetInstance()->mouse_cursor_filter();
 423   ASSERT_TRUE(event_filter);
 424   window_->SetBounds(gfx::Rect(0, 0, 50, 60));
 425
 426   EXPECT_TRUE(event_filter->mouse_warp_enabled_);
 427   {
 428     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 429         window_.get(), gfx::Point(), HTCAPTION));
 430     // While dragging a window, warp should be allowed.
 431     EXPECT_TRUE(event_filter->mouse_warp_enabled_);
 432     resizer->CompleteDrag();
 433   }
 434   EXPECT_TRUE(event_filter->mouse_warp_enabled_);
 435
 436   {
 437     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 438         window_.get(), gfx::Point(), HTCAPTION));
 439     EXPECT_TRUE(event_filter->mouse_warp_enabled_);
 440     resizer->RevertDrag();
 441   }
 442   EXPECT_TRUE(event_filter->mouse_warp_enabled_);
 443
 444   {
 445     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 446         window_.get(), gfx::Point(), HTRIGHT));
 447     // While resizing a window, warp should NOT be allowed.
 448     EXPECT_FALSE(event_filter->mouse_warp_enabled_);
 449     resizer->CompleteDrag();
 450   }
 451   EXPECT_TRUE(event_filter->mouse_warp_enabled_);
 452
 453   {
 454     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 455         window_.get(), gfx::Point(), HTRIGHT));
 456     EXPECT_FALSE(event_filter->mouse_warp_enabled_);
 457     resizer->RevertDrag();
 458   }
 459   EXPECT_TRUE(event_filter->mouse_warp_enabled_);
 460 }
 461
 462 // Verifies cursor's device scale factor is updated whe a window is moved across
 463 // root windows with different device scale factors (http://crbug.com/154183).
 464 TEST_F(DragWindowResizerTest, CursorDeviceScaleFactor) {
 465   if (!SupportsMultipleDisplays())
 466     return;
 467
 468   // The secondary display is logically on the right, but on the system (e.g. X)
 469   // layer, it's below the primary one. See UpdateDisplay() in ash_test_base.cc.
 470   UpdateDisplay("400x400,800x800*2");
 471   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 472   ASSERT_EQ(2U, root_windows.size());
 473
 474   test::CursorManagerTestApi cursor_test_api(
 475       Shell::GetInstance()->cursor_manager());
 476   // Move window from the root window with 1.0 device scale factor to the root
 477   // window with 2.0 device scale factor.
 478   {
 479     window_->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 480                                Shell::GetScreen()->GetPrimaryDisplay());
 481     EXPECT_EQ(root_windows[0], window_->GetRootWindow());
 482     // Grab (0, 0) of the window.
 483     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 484         window_.get(), gfx::Point(), HTCAPTION));
 485     EXPECT_EQ(1.0f, cursor_test_api.GetCurrentCursor().device_scale_factor());
 486     ASSERT_TRUE(resizer.get());
 487     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
 488     TestIfMouseWarpsAt(gfx::Point(399, 200));
 489     EXPECT_EQ(2.0f, cursor_test_api.GetCurrentCursor().device_scale_factor());
 490     resizer->CompleteDrag();
 491     EXPECT_EQ(2.0f, cursor_test_api.GetCurrentCursor().device_scale_factor());
 492   }
 493
 494   // Move window from the root window with 2.0 device scale factor to the root
 495   // window with 1.0 device scale factor.
 496   {
 497     // Make sure the window is on the default container first.
 498     aura::Window* default_container =
 499         GetRootWindowController(root_windows[1])
 500             ->GetContainer(kShellWindowId_DefaultContainer);
 501     default_container->AddChild(window_.get());
 502     window_->SetBoundsInScreen(
 503         gfx::Rect(600, 0, 50, 60),
 504         Shell::GetScreen()->GetDisplayNearestWindow(root_windows[1]));
 505     EXPECT_EQ(root_windows[1], window_->GetRootWindow());
 506     // Grab (0, 0) of the window.
 507     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 508         window_.get(), gfx::Point(), HTCAPTION));
 509     EXPECT_EQ(2.0f, cursor_test_api.GetCurrentCursor().device_scale_factor());
 510     ASSERT_TRUE(resizer.get());
 511     resizer->Drag(CalculateDragPoint(*resizer, -200, 200), 0);
 512     TestIfMouseWarpsAt(gfx::Point(400, 200));
 513     EXPECT_EQ(1.0f, cursor_test_api.GetCurrentCursor().device_scale_factor());
 514     resizer->CompleteDrag();
 515     EXPECT_EQ(1.0f, cursor_test_api.GetCurrentCursor().device_scale_factor());
 516   }
 517 }
 518
 519 // Verifies several kinds of windows can be moved across displays.
 520 TEST_F(DragWindowResizerTest, MoveWindowAcrossDisplays) {
 521   if (!SupportsMultipleDisplays())
 522     return;
 523
 524   // The secondary display is logically on the right, but on the system (e.g. X)
 525   // layer, it's below the primary one. See UpdateDisplay() in ash_test_base.cc.
 526   UpdateDisplay("400x400,400x400");
 527
 528   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 529   ASSERT_EQ(2U, root_windows.size());
 530
 531   // Normal window can be moved across display.
 532   {
 533     aura::Window* window = window_.get();
 534     window->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 535                               Shell::GetScreen()->GetPrimaryDisplay());
 536     // Grab (0, 0) of the window.
 537     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 538         window, gfx::Point(), HTCAPTION));
 539     ASSERT_TRUE(resizer.get());
 540     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
 541     EXPECT_TRUE(TestIfMouseWarpsAt(gfx::Point(399, 200)));
 542     EXPECT_EQ("401,200",
 543               aura::Env::GetInstance()->last_mouse_location().ToString());
 544     resizer->CompleteDrag();
 545   }
 546
 547   // Always on top window can be moved across display.
 548   {
 549     aura::Window* window = always_on_top_window_.get();
 550     window->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 551                               Shell::GetScreen()->GetPrimaryDisplay());
 552     // Grab (0, 0) of the window.
 553     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 554         window, gfx::Point(), HTCAPTION));
 555     ASSERT_TRUE(resizer.get());
 556     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
 557     EXPECT_TRUE(TestIfMouseWarpsAt(gfx::Point(399, 200)));
 558     EXPECT_EQ("401,200",
 559               aura::Env::GetInstance()->last_mouse_location().ToString());
 560     resizer->CompleteDrag();
 561   }
 562
 563   // System modal window can be moved across display.
 564   {
 565     aura::Window* window = system_modal_window_.get();
 566     window->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 567                               Shell::GetScreen()->GetPrimaryDisplay());
 568     aura::Env::GetInstance()->set_last_mouse_location(gfx::Point(0, 0));
 569     // Grab (0, 0) of the window.
 570     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 571         window, gfx::Point(), HTCAPTION));
 572     ASSERT_TRUE(resizer.get());
 573     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
 574     EXPECT_TRUE(TestIfMouseWarpsAt(gfx::Point(399, 200)));
 575     EXPECT_EQ("401,200",
 576               aura::Env::GetInstance()->last_mouse_location().ToString());
 577     resizer->CompleteDrag();
 578   }
 579
 580   // Transient window cannot be moved across display.
 581   {
 582     aura::Window* window = transient_child_;
 583     window->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 584                               Shell::GetScreen()->GetPrimaryDisplay());
 585     // Grab (0, 0) of the window.
 586     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 587         window, gfx::Point(), HTCAPTION));
 588     ASSERT_TRUE(resizer.get());
 589     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
 590     EXPECT_FALSE(TestIfMouseWarpsAt(gfx::Point(399, 200)));
 591     EXPECT_EQ("399,200",
 592               aura::Env::GetInstance()->last_mouse_location().ToString());
 593     resizer->CompleteDrag();
 594   }
 595
 596   // The parent of transient window can be moved across display.
 597   {
 598     aura::Window* window = transient_parent_.get();
 599     window->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 600                               Shell::GetScreen()->GetPrimaryDisplay());
 601     // Grab (0, 0) of the window.
 602     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 603         window, gfx::Point(), HTCAPTION));
 604     ASSERT_TRUE(resizer.get());
 605     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
 606     EXPECT_TRUE(TestIfMouseWarpsAt(gfx::Point(399, 200)));
 607     EXPECT_EQ("401,200",
 608               aura::Env::GetInstance()->last_mouse_location().ToString());
 609     resizer->CompleteDrag();
 610   }
 611
 612   // Panel window can be moved across display.
 613   {
 614     aura::Window* window = panel_window_.get();
 615     window->SetBoundsInScreen(gfx::Rect(0, 0, 50, 60),
 616                               Shell::GetScreen()->GetPrimaryDisplay());
 617     // Grab (0, 0) of the window.
 618     scoped_ptr<WindowResizer> resizer(CreateDragWindowResizer(
 619         window, gfx::Point(), HTCAPTION));
 620     ASSERT_TRUE(resizer.get());
 621     resizer->Drag(CalculateDragPoint(*resizer, 399, 200), 0);
 622     EXPECT_TRUE(TestIfMouseWarpsAt(gfx::Point(399, 200)));
 623     EXPECT_EQ("401,200",
 624               aura::Env::GetInstance()->last_mouse_location().ToString());
 625     resizer->CompleteDrag();
 626   }
 627 }
 628
 629 }  // namespace ash